(二分之一减四分之一除三)乘五分之二加五分之二
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(二分之一减四分之一除三)乘五分之二加五分之二
(二分之一减四分之一除三)乘五分之二加五分之二
(二分之一减四分之一除三)乘五分之二加五分之二
(二分之一减四分之一除三)乘五分之二加五分之二
=(1/2-1/12)×2/5+2/5
=(1/2-1/12+1)×2/5
=17/12×2/5
=17/30
分数线是/
=(1/2-1/4÷3)×2/5+2/5
=(1/2-1/12)*2/5+2/5
=5/12×2/5+2/5
=1/6+2/5
=17/30
(1/2-1/4÷3)×2/5+2/5
=﹙1/2-1/12﹚×2/5+2/5
=1/2×2/5-1/12×2/5+2/5 ...
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(1/2-1/4÷3)×2/5+2/5
=﹙1/2-1/12﹚×2/5+2/5
=1/2×2/5-1/12×2/5+2/5
=1/5-1/30+2/5
=1/6+2/5
=17/30
O(∩_∩)O~
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